Answer: no
Step-by-step explanation:
Because an equilateral triangle has its all sides equal...
But in this case, two of its sides are equal.... And the third side is different.....
Answer:
Area = 530 cm^2
Step-by-step explanation:
We are to verify the identity:
cos(α-B)-cos(α+B) = 2 sinα sinβ
Left hand side = cos(α - B)-cos(α + B)
= cosα cosβ + sinα sinB - (cosα cosB - sinα sinβ)
= cosα cosβ + sinα sinB - cosα cosB + sinα sinβ)
= sinα sinβ + sinα sinβ
= 2 sinα sinβ
= Right Hand side
Answer:
1.8
Step-by-step explanation: